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  • Plasma cutting pointer

    Hello all, I wanted to get a couple of pointers for making cuts with my plasma (spectrum 625). I was making cuts in some 12 ga. mild steel (using a guide) and I kept getting this "sticking" feel, but I'm dragging as smooth as I possibly can. The cut turns out like crap (for plasma) and it requires too much grinding to clean up! Any tips would be greatly appreciated.

  • #2
    I use a stand off for most cuts. The cuts are cleaner and the tips last much longer.
    Tim Beeker,
    T-N-J Industries
    (my side bussiness)

    Miller Synchrowave 350LX with tigrunner
    Esab 450i with wire feeder
    HH135 mig
    Thermal Dynamics cutmaster 51 plasma cutter
    Miller aircrafter 330 - sold
    Marathon 315mm coldsaw
    vertical and horizontal band saws
    table saw
    Dewalt cut off saw
    Sand blast cabinet
    lots of hand grinders
    Harris torch
    beer fridge

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    • #3
      Plasma tips

      Remember: If the sparks are shooting straight down, you're moving the torch too slowly. If the sparks bounce back, you're moving too fast. You will be hard pressed to cut 12ga too fast. The sparks should come out of the bottom at approximately a 15 degree angle. Good luck.
      Triggerman

      Ammonia refrigeration tech
      Trailblazer 302 (yes, it's new)
      Millermatic 180 w/Autoset
      CST-250
      HF-15 High frequency
      XR15 w/Push-Pull Gun
      Victor O/A, DeWalt, North mask


      "A professional knows what to do. A craftsman knows why."

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      • #4
        what is available for stand off other than the roller guide?

        i just bought a drag tip setup but it doesn't provide any stand off like i thought it did, what's the point ?
        Dynasty 200 DX
        Millermatic 175
        Spectrum 375
        All kinds of Smith OA gear

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        • #5
          My Thermal Dynamics came with one, I assumed they all did.
          Tim Beeker,
          T-N-J Industries
          (my side bussiness)

          Miller Synchrowave 350LX with tigrunner
          Esab 450i with wire feeder
          HH135 mig
          Thermal Dynamics cutmaster 51 plasma cutter
          Miller aircrafter 330 - sold
          Marathon 315mm coldsaw
          vertical and horizontal band saws
          table saw
          Dewalt cut off saw
          Sand blast cabinet
          lots of hand grinders
          Harris torch
          beer fridge

          Comment


          • #6
            well you could use a roller guide but they make some thing akward. or just hold it by hand a bit above the metal thats what y buddy does of course sometimes we have to do some grinding to touch up stuff but hey it works.

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            • #7
              Door Chart ?

              On my mig welders there's a door chart that tells you how many amps to use for the thickness you're welding.
              Is there a chart somewhere that tells you how many amps to use to cut the thickness of metal you're cutting with plasma ?

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              • #8
                Use a guide for cutting straight, piece of 1/8"x1" hot rolled is fine. Clamp it in place then run a piece of soapstone back and forth across it. The soapstone lubricates the drag tip and lets it glide across the cut. Also, a light touch is required.
                Laiky, what kind of machine do you have?

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                • #9
                  Spectrum 375
                  Dynasty 200 DX
                  Millermatic 175
                  Spectrum 375
                  All kinds of Smith OA gear

                  Comment


                  • #10
                    a light tuch and proper speed dose the most to keep it on track and cutting nice. i use a wire brush on my tip inbetween cuts to keep it clean, that might help with it sticking. lots of slag means too slow of a cut speed usualy. takes a little getting used to to learn the best speed for the matereal. after that its all good.
                    thanks for the help
                    ......or..........
                    hope i helped
                    sigpic
                    feel free to shoot me an e-mail direct i have time to chat. james@newyorkmetalart.com
                    summer is here, plant a tree. if you don't have space or time to plant one sponsor some one else to plant one for you. a tree is an investment in our planet, help it out.
                    JAMES

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                    • #11
                      That's why I love this message board!

                      Thanks for all the replies on the plasma cutting. This is my first good experience with my own plasma. I always use a guide, but was dragging (cutting) too slow. I sped up the pace and it makes a big difference. Always something to learn!

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                      • #12
                        Laiky, with the drag tip you shouldn't need stand off. You put a drag tip on there so you can drag it directly on the metal without shorting the tip. Do you have the 196 929 drag tip?

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                        • #13
                          i thought the standerd tip for the spec.375 was designed to be used as a drag tip. i didnt know they made a seperate tip for it for the 375.
                          thanks for the help
                          ......or..........
                          hope i helped
                          sigpic
                          feel free to shoot me an e-mail direct i have time to chat. james@newyorkmetalart.com
                          summer is here, plant a tree. if you don't have space or time to plant one sponsor some one else to plant one for you. a tree is an investment in our planet, help it out.
                          JAMES

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